You can use the below code. update a value in a list c# linq code example So, finally, I have found an 'inermediate' solution, the 'foreach' method, just similar to the 'Select': myObjectCollection.ForEach (myObject => myObject.MyProperty = newValue) Anyway may be it's not as clear as the more simple: foreach (MyObjetc myObject in myObjectCollection) myObjet.MyProperty = newValue; linq. We can do this by using this code. c# linq update an item in list. c# linq change item in list. Howto change an item in a list using LINQ? linq update element in list and return entire list. asp.net core ienumerable update. class Beam { public double Width { get; set; } public bool IsJoist { get; set; } } var bm1 = new Beam { Width = 40 }; var bm2 = new Beam { Width = 50 }; var bm3 = new Beam { Width = 30 }; var bm4 = new Beam { Width = 60 }; var Beams = ⦠How to assign the selected values to list using linq. how to set value in list using linq c# If you only need some target columns' value from the ⦠I am going to do this for more than 10000 values based on some criteria to all the values in the list. Learn C#: Learn C#: Lists and LINQ Cheatsheet | Codecademy Example. var validCustomers = customers.Where(c => c.IsValid); foreach( Customer cust in validCustomers) { cust.CreditLimit = 1000; } Getting to One Line of Code If you're willing to use ⦠[Solved] C# Linq query: Get all items from list which key You can then add elements in a list using ⦠Like the other two methods, Contains () is lazy. The default value is false, as soon as the predicate is satisfied (it finds sweden), it stops and returns true. That's it for my summary on the three LINQ methods Any (), All () and Contains (). I hope it was of some use to you. foreach (var student in myList.Where (r => r.Name == "Tom")) { student.Marks = 35; } Add the code shown in Listing 1-2 to LinqToSql.cs. You should iterate your list, and modify your values like: foreach (var student in myList) { if (student.Name == "Tom") { student.Marks = 35; } } Or.